摘要
根据稠油油藏体相流体渗流特点,建立基于稠油吸附边界层和屈服特性影响下的稠油体相流体非线性渗流理论模型及启动压力梯度理论公式,并利用岩心渗流与启动压力梯度试验结果对理论模型计算结果进行验证。结果表明:理论计算结果与试验结果拟合较好,启动压力梯度理论公式计算结果平均偏差为7.77%,稠油油藏体相流体非线性渗流理论模型计算结果平均偏差为7.50%,均在可接受偏差范围内,并且该模型针对不同流变类型的流体渗流都具有较好的普适性。
In this study,based on the fluid flow characteristics of heavy oil reservoirs,a nonlinear flow model of fluid flow in heavy oil reservoirs was established considering the influence of heavy oil adsorption boundary layers and yield characteristics,along with a theoretical formula for the initiation pressure gradient.The calculation results of the theoretical model were validated using core flow and initiation pressure gradient experimental results.The results show that the theoretical calculations are in good agreement with experimental results.The average deviation of the theoretical formula for the initiation pressure gradient is 7.77%,and the average deviation of the nonlinear flow model is 7.50%,both within an acceptable range of deviation.Moreover,the new model exhibits good universality for predicting the flow behavior of fluids with different rheological types.
作者
柯文丽
喻高明
刘延东
贾婷婷
KE Wenli;YU Gaoming;LIU Yandong;JIA Tingting(School of Petroleum Engineering,Yangtze University,Wuhan 430100,China;Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering(Yangtze University),Wuhan 430100,China;The Second Gas Production Plant of Changqing Oilfield Branch,Yulin 719000,China)
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2024年第4期123-130,共8页
Journal of China University of Petroleum(Edition of Natural Science)
基金
“十三五”国家重大科技专项(2016ZX05025001)。
关键词
稠油
边界层
体相流体
非线性渗流
启动压力梯度
heavy oil
boundary layer
bulk phase fluid
nonlinear seepage
threshold pressure gradient
